Buffer

Part of speech: noun (n.)

1. An elastic apparatus or fender, for deadening the jar caused by the collision of bodies; as, a buffer at the end of a railroad car.

2. A pad or cushion forming the end of a fender, which recieves the blow; -- sometimes called buffing apparatus.

3. One who polishes with a buff.

4. A wheel for buffing; a buff.

5. A good-humored, slow-witted fellow; -- usually said of an elderly man. [Colloq.] Dickens.